Message from the NACA President G. Feig Clean Air Journal · Volume 24, Issue 2 (2014) · pp. 2 DOI: 10.17159/caj/2014/24/2.7070 Abstract No abstract Article information Published3 December 2014 Languageen PublisherAcademy of Science of South Africa LicenseNo license URL DOI10.17159/caj/2014/24/2.7070 Journal ISSN1017-1703; 2410-972X